428299457 has 8 divisors (see below), whose sum is σ = 442833000. Its totient is φ = 413921664.

The previous prime is 428299451. The next prime is 428299471. The reversal of 428299457 is 754992824.

It can be written as a sum of positive squares in 4 ways, for example, as 99820081 + 328479376 = 9991^2 + 18124^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428299457 - 2²² = 424105153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428299451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33332 + ... + 44357.

It is an arithmetic number, because the mean of its divisors is an integer number (55354125).

Almost surely, 2^428299457 is an apocalyptic number.

It is an amenable number.

428299457 is a deficient number, since it is larger than the sum of its proper divisors (14533543).

428299457 is a wasteful number, since it uses less digits than its factorization.

428299457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77875.

The product of its digits is 1451520, while the sum is 50.

The square root of 428299457 is about 20695.3970002994. The cubic root of 428299457 is about 753.7879222817.

The spelling of 428299457 in words is "four hundred twenty-eight million, two hundred ninety-nine thousand, four hundred fifty-seven".